I just purchase 5 single sd/2GBET Kingston cards that are not working in my camera. Tried to format the cards in the camera and still not working. I also purchased another 2gb sd kingston card with a card reader in the same package. Not sure why, but this card works just fine. I am wondering what the BET means on the single Kingston cards I purchased and if Item# N82E16820134029 (also Kingston SD card, but more expensive) would work in my camera. I thought all sd cards are compatible? The orginal cards I purchased that are not working were $6.55 each and these new ones are 10.25 each. Please help. Thank You.